I have tried to install Ubuntu 14.04 LTS on an external drive alongside my Windows 10 OS on my internal drive.
If my external drive is connected everything works just fine. The GRUB menu loads and I have a choice Ubuntu or Windows.
But when my external drive is not connected, Windows should automatically boot, but it doesn't. Instead I'll get a sort of grub-bash. I've tried boot-repair and I see there are some Ubuntu entries on my Windows boot drive sda1, which I think shouldn't be there. I'll guess they should be on the external drive sdb1, or am I wrong?
If that is the problem, how can I move them?
I'm fairly new to all this installation stuff. I only want to try a Linux system for web development.
Here is my boot-repair info
Thanks for your help!
core.img
, since this is an EFI-mode installation. That said, the problem is analogous; GRUB is referring to files on the external disk and so is failing when it's unplugged. There are various solutions; see my answer....